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[ifxmips] implement gpiolib drivers for core gpio and ebu attached latches 

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20418 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
John Crispin 2010-03-25 11:50:46 +00:00
parent c0407fae65
commit bfcb2cab40
7 changed files with 501 additions and 258 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
target/linux/ifxmips/config-2.6.30
View File

@ -4,17 +4,17 @@ CONFIG_ADM6996_PHY=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
# CONFIG_ARCH_SUPPORTS_MSI is not set
CONFIG_ARCH_SUPPORTS_OPROFILE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_BCM47XX is not set
# CONFIG_BINARY_PRINTF is not set
CONFIG_BITREVERSE=y
# CONFIG_CAVIUM_OCTEON_REFERENCE_BOARD is not set
# CONFIG_CAVIUM_OCTEON_SIMULATOR is not set
CONFIG_CEVT_R4K_LIB=y
CONFIG_CEVT_R4K=y
CONFIG_CEVT_R4K_LIB=y
CONFIG_CMDLINE="console=ttyS0,9600 rootfstype=squashfs,jffs2"
CONFIG_CPU_BIG_ENDIAN=y
# CONFIG_CPU_CAVIUM_OCTEON is not set
@ -23,9 +23,9 @@ CONFIG_CPU_HAS_PREFETCH=y
CONFIG_CPU_HAS_SYNC=y
# CONFIG_CPU_LITTLE_ENDIAN is not set
# CONFIG_CPU_LOONGSON2 is not set
CONFIG_CPU_MIPS32=y
# CONFIG_CPU_MIPS32_R1 is not set
CONFIG_CPU_MIPS32_R2=y
CONFIG_CPU_MIPS32=y
# CONFIG_CPU_MIPS64_R1 is not set
# CONFIG_CPU_MIPS64_R2 is not set
CONFIG_CPU_MIPSR2=y
@ -47,21 +47,24 @@ CONFIG_CPU_SUPPORTS_HIGHMEM=y
# CONFIG_CPU_TX39XX is not set
# CONFIG_CPU_TX49XX is not set
# CONFIG_CPU_VR41XX is not set
CONFIG_CSRC_R4K_LIB=y
CONFIG_CSRC_R4K=y
CONFIG_CSRC_R4K_LIB=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DEVPORT=y
# CONFIG_DM9000 is not set
CONFIG_DMA_NEED_PCI_MAP_STATE=y
CONFIG_DMA_NONCOHERENT=y
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_FIND_LAST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_IFXMIPS_EBU=y
CONFIG_GPIO_SYSFS=y
CONFIG_HARDWARE_WATCHPOINTS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
@ -75,15 +78,15 @@ CONFIG_HAVE_STD_PC_SERIAL_PORT=y
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_HW_HAS_PCI=y
CONFIG_HW_RANDOM=y
# CONFIG_HZ_100 is not set
CONFIG_HZ=250
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
CONFIG_IFXMIPS=y
CONFIG_IFXMIPS_GPIO_RST_BTN=y
CONFIG_IFXMIPS_MII0=y
# CONFIG_IFXMIPS_PROM_ASC0 is not set
CONFIG_IFXMIPS_PROM_ASC1=y
CONFIG_IFXMIPS_WDT=y
CONFIG_IFXMIPS=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_IRQ_CPU=y
CONFIG_KALLSYMS=y
@ -97,6 +100,7 @@ CONFIG_LEDS_IFXMIPS=y
# CONFIG_MACH_TX49XX is not set
# CONFIG_MACH_VR41XX is not set
# CONFIG_MIKROTIK_RB532 is not set
CONFIG_MIPS=y
# CONFIG_MIPS_COBALT is not set
CONFIG_MIPS_L1_CACHE_SHIFT=5
# CONFIG_MIPS_MACHINE is not set
@ -106,10 +110,8 @@ CONFIG_MIPS_MT_DISABLED=y
# CONFIG_MIPS_MT_SMTC is not set
# CONFIG_MIPS_SIM is not set
# CONFIG_MIPS_VPE_LOADER is not set
CONFIG_MIPS=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_GEOMETRY=y
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_IFXMIPS=y
# CONFIG_MTD_MAP_BANK_WIDTH_1 is not set
@ -126,6 +128,7 @@ CONFIG_PHYLIB=y
# CONFIG_PNX8550_JBS is not set
# CONFIG_PNX8550_STB810 is not set
# CONFIG_PROBE_INITRD_HEADER is not set
CONFIG_RTL8306_PHY=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_SCSI_DMA is not set
# CONFIG_SERIAL_8250 is not set
@ -143,7 +146,6 @@ CONFIG_SERIAL_IFXMIPS=y
# CONFIG_SIBYTE_SENTOSA is not set
# CONFIG_SIBYTE_SWARM is not set
# CONFIG_SLOW_WORK is not set
CONFIG_SQUASHFS_SUPPORT_LZMA=y
CONFIG_SWAP_IO_SPACE=y
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y

161
target/linux/ifxmips/config-2.6.32 Normal file
View File

@ -0,0 +1,161 @@
CONFIG_32BIT=y
# CONFIG_64BIT is not set
CONFIG_ADM6996_PHY=y
# CONFIG_ALCHEMY_GPIO_INDIRECT is not set
# CONFIG_AR7 is not set
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_ARCH_SUPPORTS_MSI is not set
CONFIG_ARCH_SUPPORTS_OPROFILE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_BCM47XX is not set
# CONFIG_BCM63XX is not set
CONFIG_BITREVERSE=y
# CONFIG_CAVIUM_OCTEON_REFERENCE_BOARD is not set
# CONFIG_CAVIUM_OCTEON_SIMULATOR is not set
CONFIG_CEVT_R4K=y
CONFIG_CEVT_R4K_LIB=y
CONFIG_CFG80211_DEFAULT_PS_VALUE=0
CONFIG_CMDLINE="console=ttyS0,9600 rootfstype=squashfs,jffs2"
CONFIG_CPU_BIG_ENDIAN=y
# CONFIG_CPU_CAVIUM_OCTEON is not set
CONFIG_CPU_HAS_PREFETCH=y
CONFIG_CPU_HAS_SYNC=y
# CONFIG_CPU_LITTLE_ENDIAN is not set
# CONFIG_CPU_LOONGSON2E is not set
CONFIG_CPU_MIPS32=y
# CONFIG_CPU_MIPS32_R1 is not set
CONFIG_CPU_MIPS32_R2=y
# CONFIG_CPU_MIPS64_R1 is not set
# CONFIG_CPU_MIPS64_R2 is not set
CONFIG_CPU_MIPSR2=y
# CONFIG_CPU_NEVADA is not set
# CONFIG_CPU_R10000 is not set
# CONFIG_CPU_R3000 is not set
# CONFIG_CPU_R4300 is not set
# CONFIG_CPU_R4X00 is not set
# CONFIG_CPU_R5000 is not set
# CONFIG_CPU_R5432 is not set
# CONFIG_CPU_R5500 is not set
# CONFIG_CPU_R6000 is not set
# CONFIG_CPU_R8000 is not set
# CONFIG_CPU_RM7000 is not set
# CONFIG_CPU_RM9000 is not set
# CONFIG_CPU_SB1 is not set
CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
CONFIG_CPU_SUPPORTS_HIGHMEM=y
# CONFIG_CPU_TX39XX is not set
# CONFIG_CPU_TX49XX is not set
# CONFIG_CPU_VR41XX is not set
CONFIG_CSRC_R4K=y
CONFIG_CSRC_R4K_LIB=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DEVPORT=y
# CONFIG_DM9000 is not set
CONFIG_DMA_NEED_PCI_MAP_STATE=y
CONFIG_DMA_NONCOHERENT=y
CONFIG_EARLY_PRINTK=y
# CONFIG_FSNOTIFY is not set
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_FIND_LAST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_HARDWARE_WATCHPOINTS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_HAVE_IDE=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_STD_PC_SERIAL_PORT=y
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_HW_HAS_PCI=y
CONFIG_HW_RANDOM=y
CONFIG_HZ=250
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
CONFIG_IFXMIPS=y
CONFIG_IFXMIPS_GPIO_RST_BTN=y
CONFIG_IFXMIPS_MII0=y
# CONFIG_IFXMIPS_PROM_ASC0 is not set
CONFIG_IFXMIPS_PROM_ASC1=y
CONFIG_IFXMIPS_WDT=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_IRQ_CPU=y
CONFIG_KALLSYMS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_IFXMIPS=y
# CONFIG_MACH_ALCHEMY is not set
# CONFIG_MACH_DECSTATION is not set
# CONFIG_MACH_JAZZ is not set
# CONFIG_MACH_LOONGSON is not set
# CONFIG_MACH_TX39XX is not set
# CONFIG_MACH_TX49XX is not set
# CONFIG_MACH_VR41XX is not set
# CONFIG_MIKROTIK_RB532 is not set
CONFIG_MIPS=y
# CONFIG_MIPS_COBALT is not set
CONFIG_MIPS_L1_CACHE_SHIFT=5
# CONFIG_MIPS_MACHINE is not set
# CONFIG_MIPS_MALTA is not set
CONFIG_MIPS_MT_DISABLED=y
# CONFIG_MIPS_MT_SMP is not set
# CONFIG_MIPS_MT_SMTC is not set
# CONFIG_MIPS_SIM is not set
# CONFIG_MIPS_VPE_LOADER is not set
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_GEOMETRY=y
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_IFXMIPS=y
# CONFIG_MTD_MAP_BANK_WIDTH_1 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_4 is not set
# CONFIG_NO_IOPORT is not set
# CONFIG_NXP_STB220 is not set
# CONFIG_NXP_STB225 is not set
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PCI_DOMAINS=y
CONFIG_PHYLIB=y
# CONFIG_PMC_MSP is not set
# CONFIG_PMC_YOSEMITE is not set
# CONFIG_PNX8550_JBS is not set
# CONFIG_PNX8550_STB810 is not set
# CONFIG_PROBE_INITRD_HEADER is not set
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_SCSI_DMA is not set
# CONFIG_SERIAL_8250 is not set
CONFIG_SERIAL_IFXMIPS=y
# CONFIG_SGI_IP22 is not set
# CONFIG_SGI_IP27 is not set
# CONFIG_SGI_IP28 is not set
# CONFIG_SGI_IP32 is not set
# CONFIG_SIBYTE_BIGSUR is not set
# CONFIG_SIBYTE_CARMEL is not set
# CONFIG_SIBYTE_CRHINE is not set
# CONFIG_SIBYTE_CRHONE is not set
# CONFIG_SIBYTE_LITTLESUR is not set
# CONFIG_SIBYTE_RHONE is not set
# CONFIG_SIBYTE_SENTOSA is not set
# CONFIG_SIBYTE_SWARM is not set
CONFIG_SWAP_IO_SPACE=y
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y
CONFIG_SYS_HAS_CPU_MIPS32_R2=y
CONFIG_SYS_HAS_EARLY_PRINTK=y
CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
CONFIG_SYS_SUPPORTS_MULTITHREADING=y
# CONFIG_TC35815 is not set
CONFIG_TRAD_SIGNALS=y
# CONFIG_TREE_PREEMPT_RCU is not set
CONFIG_TREE_RCU=y
CONFIG_USB_SUPPORT=y
CONFIG_ZONE_DMA_FLAG=0

243
target/linux/ifxmips/files/arch/mips/ifxmips/gpio.c
View File

@ -36,6 +36,7 @@
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/semaphore.h>
#include <linux/gpio.h>
#include <net/sock.h>
@ -44,27 +45,13 @@
#define MAX_PORTS 2
#define PINS_PER_PORT 16
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
unsigned int rst_port = 1;
unsigned int rst_pin = 15;
static struct timer_list rst_button_timer;
extern struct sock *uevent_sock;
extern u64 uevent_next_seqnum(void);
static unsigned long seen;
static int pressed;
struct event_t {
struct work_struct wq;
int set;
unsigned long jiffies;
};
#endif
#define IFXMIPS_GPIO_SANITY {if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; }
int ifxmips_port_reserve_pin(unsigned int port, unsigned int pin)
#define GPIO_TO_PORT(x) ((x > 15) ? (1) : (0))
#define GPIO_TO_GPIO(x) ((x > 15) ? (x - 16) : (x))
int
ifxmips_port_reserve_pin(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
printk(KERN_INFO "%s : call to obseleted function\n", __func__);
@ -72,7 +59,8 @@ int ifxmips_port_reserve_pin(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_reserve_pin);
int ifxmips_port_free_pin(unsigned int port, unsigned int pin)
int
ifxmips_port_free_pin(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
printk(KERN_INFO "%s : call to obseleted function\n", __func__);
@ -80,7 +68,8 @@ int ifxmips_port_free_pin(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_free_pin);
int ifxmips_port_set_open_drain(unsigned int port, unsigned int pin)
int
ifxmips_port_set_open_drain(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin),
@ -89,7 +78,8 @@ int ifxmips_port_set_open_drain(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_open_drain);
int ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin),
@ -98,7 +88,8 @@ int ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_open_drain);
int ifxmips_port_set_pudsel(unsigned int port, unsigned int pin)
int
ifxmips_port_set_pudsel(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin),
@ -107,7 +98,8 @@ int ifxmips_port_set_pudsel(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_pudsel);
int ifxmips_port_clear_pudsel(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_pudsel(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin),
@ -116,7 +108,8 @@ int ifxmips_port_clear_pudsel(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_pudsel);
int ifxmips_port_set_puden(unsigned int port, unsigned int pin)
int
ifxmips_port_set_puden(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin),
@ -125,7 +118,8 @@ int ifxmips_port_set_puden(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_puden);
int ifxmips_port_clear_puden(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_puden(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin),
@ -134,7 +128,8 @@ int ifxmips_port_clear_puden(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_puden);
int ifxmips_port_set_stoff(unsigned int port, unsigned int pin)
int
ifxmips_port_set_stoff(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin),
@ -143,7 +138,8 @@ int ifxmips_port_set_stoff(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_stoff);
int ifxmips_port_clear_stoff(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_stoff(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin),
@ -152,7 +148,8 @@ int ifxmips_port_clear_stoff(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_stoff);
int ifxmips_port_set_dir_out(unsigned int port, unsigned int pin)
int
ifxmips_port_set_dir_out(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin),
@ -161,7 +158,8 @@ int ifxmips_port_set_dir_out(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_dir_out);
int ifxmips_port_set_dir_in(unsigned int port, unsigned int pin)
int
ifxmips_port_set_dir_in(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin),
@ -170,7 +168,8 @@ int ifxmips_port_set_dir_in(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_dir_in);
int ifxmips_port_set_output(unsigned int port, unsigned int pin)
int
ifxmips_port_set_output(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin),
@ -179,7 +178,8 @@ int ifxmips_port_set_output(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_output);
int ifxmips_port_clear_output(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_output(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin),
@ -188,7 +188,8 @@ int ifxmips_port_clear_output(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_output);
int ifxmips_port_get_input(unsigned int port, unsigned int pin)
int
ifxmips_port_get_input(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
if (ifxmips_r32(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin))
@ -198,7 +199,8 @@ int ifxmips_port_get_input(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_get_input);
int ifxmips_port_set_altsel0(unsigned int port, unsigned int pin)
int
ifxmips_port_set_altsel0(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin),
@ -207,7 +209,8 @@ int ifxmips_port_set_altsel0(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_altsel0);
int ifxmips_port_clear_altsel0(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_altsel0(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin),
@ -216,7 +219,8 @@ int ifxmips_port_clear_altsel0(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_altsel0);
int ifxmips_port_set_altsel1(unsigned int port, unsigned int pin)
int
ifxmips_port_set_altsel1(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin),
@ -225,7 +229,8 @@ int ifxmips_port_set_altsel1(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_set_altsel1);
int ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin)
int
ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin)
{
IFXMIPS_GPIO_SANITY;
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) & ~(1 << pin),
@ -234,105 +239,85 @@ int ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin)
}
EXPORT_SYMBOL(ifxmips_port_clear_altsel1);
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
static inline void add_msg(struct sk_buff *skb, char *msg)
static void
ifxmips_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
{
char *scratch;
scratch = skb_put(skb, strlen(msg) + 1);
sprintf(scratch, msg);
int port = GPIO_TO_PORT(offset);
int gpio = GPIO_TO_GPIO(offset);
if(value)
ifxmips_port_set_output(port, gpio);
else
ifxmips_port_clear_output(port, gpio);
}
static void hotplug_button(struct work_struct *wq)
static int
ifxmips_gpio_get(struct gpio_chip *chip, unsigned int offset)
{
struct sk_buff *skb;
struct event_t *event;
size_t len;
char *scratch, *s;
char buf[128];
event = container_of(wq, struct event_t, wq);
if (!uevent_sock)
goto done;
s = event->set ? "pressed" : "released";
len = strlen(s) + 2;
skb = alloc_skb(len + 2048, GFP_KERNEL);
if (!skb)
goto done;
scratch = skb_put(skb, len);
sprintf(scratch, "%s@", s);
add_msg(skb, "HOME=/");
add_msg(skb, "PATH=/sbin:/bin:/usr/sbin:/usr/bin");
add_msg(skb, "SUBSYSTEM=button");
add_msg(skb, "BUTTON=reset");
add_msg(skb, (event->set ? "ACTION=pressed" : "ACTION=released"));
sprintf(buf, "SEEN=%ld", (event->jiffies - seen)/HZ);
add_msg(skb, buf);
snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum());
add_msg(skb, buf);
NETLINK_CB(skb).dst_group = 1;
netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL);
done:
kfree(event);
int port = GPIO_TO_PORT(offset);
int gpio = GPIO_TO_GPIO(offset);
return ifxmips_port_get_input(port, gpio);
}
static void reset_button_poll(unsigned long unused)
static int
ifxmips_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
{
struct event_t *event;
rst_button_timer.expires = jiffies + (HZ / 4);
add_timer(&rst_button_timer);
if (pressed != ifxmips_port_get_input(rst_port, rst_pin)) {
if (pressed)
pressed = 0;
else
pressed = 1;
event = kzalloc(sizeof(struct event_t), GFP_ATOMIC);
if (!event) {
printk(KERN_INFO "Could not alloc hotplug event\n");
return;
}
event->set = pressed;
event->jiffies = jiffies;
INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
schedule_work(&event->wq);
seen = jiffies;
}
}
#endif
static int ifxmips_gpio_probe(struct platform_device *dev)
{
int retval = 0;
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
rst_port = dev->resource[0].start;
rst_pin = dev->resource[0].end;
ifxmips_port_set_open_drain(rst_port, rst_pin);
ifxmips_port_clear_altsel0(rst_port, rst_pin);
ifxmips_port_clear_altsel1(rst_port, rst_pin);
ifxmips_port_set_dir_in(rst_port, rst_pin);
seen = jiffies;
init_timer(&rst_button_timer);
rst_button_timer.function = reset_button_poll;
rst_button_timer.expires = jiffies + HZ;
add_timer(&rst_button_timer);
#endif
return retval;
}
static int ifxmips_gpio_remove(struct platform_device *pdev)
{
#ifdef CONFIG_IFXMIPS_GPIO_RST_BTN
del_timer_sync(&rst_button_timer);
#endif
int port = GPIO_TO_PORT(offset);
int gpio = GPIO_TO_GPIO(offset);
ifxmips_port_set_open_drain(port, gpio);
ifxmips_port_clear_altsel0(port, gpio);
ifxmips_port_clear_altsel1(port, gpio);
ifxmips_port_set_dir_in(port, gpio);
return 0;
}
static struct platform_driver ifxmips_gpio_driver = {
static int
ifxmips_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, int value)
{
int port = GPIO_TO_PORT(offset);
int gpio = GPIO_TO_GPIO(offset);
ifxmips_port_clear_open_drain(port, gpio);
ifxmips_port_clear_altsel0(port, gpio);
ifxmips_port_clear_altsel1(port, gpio);
ifxmips_port_set_dir_out(port, gpio);
ifxmips_gpio_set(chip, offset, value);
return 0;
}
int
gpio_to_irq(unsigned int gpio)
{
return -EINVAL;
}
EXPORT_SYMBOL(gpio_to_irq);
struct gpio_chip
ifxmips_gpio_chip =
{
.label = "ifxmips-gpio",
.direction_input = ifxmips_gpio_direction_input,
.direction_output = ifxmips_gpio_direction_output,
.get = ifxmips_gpio_get,
.set = ifxmips_gpio_set,
.base = 0,
.ngpio = 32,
};
static int
ifxmips_gpio_probe(struct platform_device *dev)
{
gpiochip_add(&ifxmips_gpio_chip);
return 0;
}
static int
ifxmips_gpio_remove(struct platform_device *pdev)
{
gpiochip_remove(&ifxmips_gpio_chip);
return 0;
}
static struct platform_driver
ifxmips_gpio_driver = {
.probe = ifxmips_gpio_probe,
.remove = ifxmips_gpio_remove,
.driver = {
@ -341,7 +326,8 @@ static struct platform_driver ifxmips_gpio_driver = {
},
};
int __init ifxmips_gpio_init(void)
int __init
ifxmips_gpio_init(void)
{
int ret = platform_driver_register(&ifxmips_gpio_driver);
if (ret)
@ -349,7 +335,8 @@ int __init ifxmips_gpio_init(void)
return ret;
}
void __exit ifxmips_gpio_exit(void)
void __exit
ifxmips_gpio_exit(void)
{
platform_driver_unregister(&ifxmips_gpio_driver);
}

105
target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/gpio.h
View File

@ -1,105 +0,0 @@
/*
* include/asm-mips/mach-ifxmips/gpio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#ifndef _IFXMIPS_GPIO_H_
#define _IFXMIPS_GPIO_H_
#include <ifxmips.h>
#include <ifxmips_gpio.h>
#define GPIO_TO_PORT(x) ((x > 15) ? (1) : (0))
#define GPIO_TO_GPIO(x) ((x > 15) ? (x-16) : (x))
static inline int gpio_direction_input(unsigned gpio)
{
ifxmips_port_set_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_set_dir_in(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
return 0;
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
ifxmips_port_clear_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_set_dir_out(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
return 0;
}
static inline int gpio_get_value(unsigned gpio)
{
ifxmips_port_get_input(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
return 0;
}
static inline void gpio_set_value(unsigned gpio, int value)
{
if (value)
ifxmips_port_set_output(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
else
ifxmips_port_clear_output(GPIO_TO_PORT(gpio),
GPIO_TO_GPIO(gpio));
}
static inline int gpio_request(unsigned gpio, const char *label)
{
return 0;
}
static inline void gpio_free(unsigned gpio)
{
}
static inline int gpio_to_irq(unsigned gpio)
{
return 0;
}
static inline int irq_to_gpio(unsigned irq)
{
return 0;
}
static inline int gpio_cansleep(unsigned gpio)
{
return 0;
}
static inline int gpio_get_value_cansleep(unsigned gpio)
{
might_sleep();
return gpio_get_value(gpio);
}
static inline void gpio_set_value_cansleep(unsigned gpio, int value)
{
might_sleep();
gpio_set_value(gpio, value);
}
static inline int gpio_is_valid(int number)
{
return ((unsigned)number) < 32;
}
#endif

7
target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/ifxmips_irq.h
View File

@ -66,8 +66,11 @@
#define IFXMIPS_PPE_MBOX_INT (INT_NUM_IM2_IRL0 + 24)
#define IFXMIPS_USB_INT (INT_NUM_IM4_IRL0 + 22)
#define IFXMIPS_USB_OC_INT (INT_NUM_IM4_IRL0 + 23)
#define INT_NUM_IM4_IRL14 (INT_NUM_IM4_IRL0 + 14)
#define INT_NUM_IM4_IRL18 (INT_NUM_IM4_IRL0 + 18)
#define INT_NUM_IM4_IRL19 (INT_NUM_IM4_IRL0 + 19)
#define IFXMIPS_USB_INT (INT_NUM_IM4_IRL0 + 22)
#define IFXMIPS_USB_OC_INT (INT_NUM_IM4_IRL0 + 23)
extern void ifxmips_mask_and_ack_irq(unsigned int irq_nr);

25
target/linux/ifxmips/patches-2.6.30/100-board.patch
View File

@ -1,8 +1,8 @@
Index: linux-2.6.30.5/arch/mips/Kconfig
Index: linux-2.6.30.10/arch/mips/Kconfig
===================================================================
--- linux-2.6.30.5.orig/arch/mips/Kconfig 2009-09-02 22:12:48.000000000 +0200
+++ linux-2.6.30.5/arch/mips/Kconfig 2009-09-03 01:18:31.000000000 +0200
@@ -79,6 +79,24 @@
--- linux-2.6.30.10.orig/arch/mips/Kconfig 2010-03-24 15:32:02.000000000 +0100
+++ linux-2.6.30.10/arch/mips/Kconfig 2010-03-24 21:56:29.000000000 +0100
@@ -79,6 +79,23 @@
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
@ -20,14 +20,13 @@ Index: linux-2.6.30.5/arch/mips/Kconfig
+ select SYS_SUPPORTS_MULTITHREADING
+ select SYS_HAS_EARLY_PRINTK
+ select HW_HAS_PCI
+ select GENERIC_GPIO
+ select ARCH_WANT_OPTIONAL_GPIOLIB
+ select ARCH_REQUIRE_GPIOLIB
+ select SWAP_IO_SPACE
+
config MACH_DECSTATION
bool "DECstations"
select BOOT_ELF32
@@ -643,6 +661,7 @@
@@ -643,6 +660,7 @@
source "arch/mips/txx9/Kconfig"
source "arch/mips/vr41xx/Kconfig"
source "arch/mips/cavium-octeon/Kconfig"
@ -35,10 +34,10 @@ Index: linux-2.6.30.5/arch/mips/Kconfig
endmenu
Index: linux-2.6.30.5/arch/mips/Makefile
Index: linux-2.6.30.10/arch/mips/Makefile
===================================================================
--- linux-2.6.30.5.orig/arch/mips/Makefile 2009-09-02 22:12:48.000000000 +0200
+++ linux-2.6.30.5/arch/mips/Makefile 2009-09-02 22:12:53.000000000 +0200
--- linux-2.6.30.10.orig/arch/mips/Makefile 2010-03-24 15:32:02.000000000 +0100
+++ linux-2.6.30.10/arch/mips/Makefile 2010-03-24 15:32:04.000000000 +0100
@@ -290,6 +290,13 @@
load-$(CONFIG_MIPS_COBALT) += 0xffffffff80080000
@ -53,10 +52,10 @@ Index: linux-2.6.30.5/arch/mips/Makefile
# DECstation family
#
core-$(CONFIG_MACH_DECSTATION) += arch/mips/dec/
Index: linux-2.6.30.5/arch/mips/include/asm/bootinfo.h
Index: linux-2.6.30.10/arch/mips/include/asm/bootinfo.h
===================================================================
--- linux-2.6.30.5.orig/arch/mips/include/asm/bootinfo.h 2009-09-02 22:12:48.000000000 +0200
+++ linux-2.6.30.5/arch/mips/include/asm/bootinfo.h 2009-09-02 22:13:05.000000000 +0200
--- linux-2.6.30.10.orig/arch/mips/include/asm/bootinfo.h 2009-12-04 07:00:07.000000000 +0100
+++ linux-2.6.30.10/arch/mips/include/asm/bootinfo.h 2010-03-24 15:32:04.000000000 +0100
@@ -57,6 +57,8 @@
#define MACH_MIKROTIK_RB532 0 /* Mikrotik RouterBoard 532 */
#define MACH_MIKROTIK_RB532A 1 /* Mikrotik RouterBoard 532A */

196
target/linux/ifxmips/patches-2.6.30/600-ebu-gpio.patch Normal file
View File

@ -0,0 +1,196 @@
Index: linux-2.6.30.10/drivers/gpio/Kconfig
===================================================================
--- linux-2.6.30.10.orig/drivers/gpio/Kconfig 2010-03-24 21:55:56.000000000 +0100
+++ linux-2.6.30.10/drivers/gpio/Kconfig 2010-03-24 21:56:36.000000000 +0100
@@ -176,4 +176,12 @@
SPI driver for Microchip MCP23S08 I/O expander. This provides
a GPIO interface supporting inputs and outputs.
+comment "EBU GPIO expanders:"
+
+config GPIO_IFXMIPS_EBU
+ boolean "IFXMIPS EBU attached I/O expander"
+ depends on IFXMIPS
+ help
+ This driver allows you to drive latches attached to the SoCc External Bus Unit
+
endif
Index: linux-2.6.30.10/drivers/gpio/Makefile
===================================================================
--- linux-2.6.30.10.orig/drivers/gpio/Makefile 2010-03-24 21:55:56.000000000 +0100
+++ linux-2.6.30.10/drivers/gpio/Makefile 2010-03-24 21:56:36.000000000 +0100
@@ -12,3 +12,4 @@
obj-$(CONFIG_GPIO_TWL4030) += twl4030-gpio.o
obj-$(CONFIG_GPIO_XILINX) += xilinx_gpio.o
obj-$(CONFIG_GPIO_BT8XX) += bt8xxgpio.o
+obj-$(CONFIG_GPIO_IFXMIPS_EBU) += ifxmips_ebu_gpio.o
Index: linux-2.6.30.10/arch/mips/ifxmips/board.c
===================================================================
--- linux-2.6.30.10.orig/arch/mips/ifxmips/board.c 2010-03-25 10:43:06.000000000 +0100
+++ linux-2.6.30.10/arch/mips/ifxmips/board.c 2010-03-25 12:40:54.000000000 +0100
@@ -111,6 +111,11 @@
.name = "ifxmips_wdt",
};
+static struct platform_device ifxmips_ebu = {
+ .id = 0,
+ .name = "ifxmips_ebu",
+};
+
static struct resource ifxmips_mtd_resource = {
.start = IFXMIPS_FLASH_START,
.end = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
@@ -145,10 +150,18 @@
static struct gpio_led arv452_gpio_leds[] = {
{ .name = "ifx:blue:power", .gpio = 3, .active_low = 1, },
{ .name = "ifx:blue:adsl", .gpio = 4, .active_low = 1, },
- { .name = "ifx:pink:internet", .gpio = 5, .active_low = 1, },
+ { .name = "ifx:blue:internet", .gpio = 5, .active_low = 1, },
{ .name = "ifx:red:power", .gpio = 6, .active_low = 1, },
{ .name = "ifx:yello:wps", .gpio = 7, .active_low = 1, },
{ .name = "ifx:red:wps", .gpio = 9, .active_low = 1, },
+ { .name = "ifx:blue:voip", .gpio = 32, .active_low = 1, },
+ { .name = "ifx:blue:fxs1", .gpio = 33, .active_low = 1, },
+ { .name = "ifx:blue:fxs2", .gpio = 34, .active_low = 1, },
+ { .name = "ifx:blue:fxo", .gpio = 35, .active_low = 1, },
+ { .name = "ifx:blue:voice", .gpio = 36, .active_low = 1, },
+ { .name = "ifx:blue:usb", .gpio = 37, .active_low = 1, },
+ { .name = "ifx:blue:wlan", .gpio = 38, .active_low = 1, },
+ { .name = "ifx:red:internet", .gpio = 41, .active_low = 1, },
};
static struct gpio_led_platform_data ifxmips_gpio_led_data;
@@ -205,6 +218,7 @@
struct platform_device *arv452_devs[] = {
&ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
&ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
+ &ifxmips_ebu,
#ifdef CONFIG_LEDS_GPIO
&ifxmips_gpio_leds,
#endif
Index: linux-2.6.30.10/drivers/gpio/ifxmips_ebu_gpio.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.30.10/drivers/gpio/ifxmips_ebu_gpio.c 2010-03-25 12:47:07.000000000 +0100
@@ -0,0 +1,121 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/gpio.h>
+#include <ifxmips.h>
+
+#define IFXMIPS_EBU_START 0x14000000
+#define IFXMIPS_EBU_MAX 0x00001000
+#define IFXMIPS_EBU_BUSCON 0x1e7ff
+#define IFXMIPS_EBU_WP 0x80000000
+
+static int shadow = (1 << 10) | (1 << 8);
+static void __iomem *virt;
+
+static int
+ifxmips_ebu_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ return -EINVAL;
+}
+
+static int
+ifxmips_ebu_direction_output(struct gpio_chip *chip, unsigned offset, int value)
+{
+ return 0;
+}
+
+static int
+ifxmips_ebu_get(struct gpio_chip *chip, unsigned offset)
+{
+ return -EINVAL;
+}
+
+static void
+ifxmips_ebu_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ if(value)
+ shadow |= (1 << offset);
+ else
+ shadow &= ~(1 << offset);
+ ifxmips_w32(IFXMIPS_EBU_BUSCON, IFXMIPS_EBU_BUSCON1);
+ *((__u16*)virt) = shadow;
+ ifxmips_w32(IFXMIPS_EBU_BUSCON | IFXMIPS_EBU_WP, IFXMIPS_EBU_BUSCON1);
+}
+
+static struct gpio_chip
+ifxmips_ebu_chip =
+{
+ .label = "ifxmips_ebu",
+ .direction_input = ifxmips_ebu_direction_input,
+ .direction_output = ifxmips_ebu_direction_output,
+ .set = ifxmips_ebu_set,
+ .get = ifxmips_ebu_get,
+ .base = 32,
+ .ngpio = 16,
+ .can_sleep = 1,
+ .owner = THIS_MODULE,
+};
+
+static int __devinit
+ifxmips_ebu_probe(struct platform_device *dev)
+{
+ ifxmips_w32(IFXMIPS_EBU_START | 0x1, IFXMIPS_EBU_ADDRSEL1);
+ ifxmips_w32(IFXMIPS_EBU_BUSCON | IFXMIPS_EBU_WP, IFXMIPS_EBU_BUSCON1);
+ virt = ioremap_nocache(IFXMIPS_EBU_START, IFXMIPS_EBU_MAX);
+ if(gpiochip_add(&ifxmips_ebu_chip))
+ return -EINVAL;
+ return 0;
+}
+
+static int
+ifxmips_ebu_remove(struct platform_device *dev)
+{
+ return gpiochip_remove(&ifxmips_ebu_chip);
+}
+
+static struct platform_driver
+ifxmips_ebu_driver = {
+ .probe = ifxmips_ebu_probe,
+ .remove = ifxmips_ebu_remove,
+ .driver = {
+ .name = "ifxmips_ebu",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init
+ifxmips_ebu_init(void)
+{
+ return platform_driver_register(&ifxmips_ebu_driver);
+}
+
+static void __exit
+ifxmips_ebu_exit(void)
+{
+ platform_driver_unregister(&ifxmips_ebu_driver);
+}
+
+module_init(ifxmips_ebu_init);
+module_exit(ifxmips_ebu_exit);
+
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ifxmips - EBU Latch GPIO-Expander");